The fastest and most effective way to regulate low blood pressure is medication. Low blood pressure is defined as a diastolic blood pressure below 60 mmHg. When the diastolic blood pressure is too low, it can have an adverse effect on the heart and brain tissue and other organs, and the patient may experience symptoms such as dizziness and chest tightness. The fastest and most effective way to improve low diastolic blood pressure is medication, which is usually taken orally, and may include ephedrine, midodrine and other drugs. Specific drug selection and dosage should consult a medical professional. At the same time, patients are advised to pay attention to ensure adequate blood volume, such as drinking warm water, salt supplementation and so on. Patients with symptoms of low blood pressure should go to a specialized hospital in time, firstly to clarify the cause of the disease, and then to carry out appropriate treatment under the guidance of a professional physician, to avoid delays in the condition.